External Beam Radiotherapy (EBRT) refers to radiation directed at you from outside the body. This can be delivered in a number of different ways, including via a Linear Accelerator (Linac), Cobalt or Orthovoltage units.
Once the CT is carried out, it is sent electronically to the planning department. The areas to be treated and the organs to be protected are outlined on the CT and a customised plan is created for the patient.
Stereotactic body radiotherapy is a specialised type of external beam radiotherapy that allows the delivery of high doses of radiation to small tumours, while minimising the dose received by the surrounding normal tissues. It is used most frequently to treat early lung cancers.